Cone crusher



E. B. SYMONS Feb. 10, 1931'.

GONE CRUS HER Filed Dec. 9, 1929 2 Sheets-Sheet l 2 Sheets-Sheet 2 @g2 E. B. SYMONS Feb. l0, 1931-.

GONE CRUSHER Filed Dec. 9. 1929 Patented Feb. 10, 1931 UNITED STATES PATENT OFFICE I EDGAR B. SYMONS, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO NORDBERG MANUe FACTURING COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF WIS- C ON SIN GONE CRUSHER Application led December 9, 1929. Serial No. 412,617.

My invention relates to gyrating cone Crushers of the type in which a cone or inclined member is gyrated. Oneobject of my invention is to provide means for preventing the access of dust or small particles to a supporting bearing or supporting means for such a cone, or to prevent the access of'dust to the working or gyrating parts. A particular application of my invention is to a machine in which ia gyrated head is seated upon'and supported on a` concave spherical bearing surface, the lower portion lof the head being spherically convex in general conformity to the supporting surface. However, I do not wish to be limited specifically to this particular use or application, except so far asl do specifically limit myself by the language of individual claims. One object of the invention is `to prevent the access of dust or dirt to such a bearing. Another object is the lprovision of pneumatic means for ,expelling fine particles from the vicinity of the bearing or supporting or operating means of such a cone. Other object-s Will appear from time to time in the course of the specification and claims.

I illustrate my invention more or less diagrammatically inthe accompanying drawings, wherein- Figure l is a vertical axial section;

Figure 2 is an enlarged detailed section; .and

Figure 3 is a section on"the line 3 3 of Figure 2.

Like parts are indicated by like symbols throughout the specification and drawings.

Referring to the drawings, A indicates a bed upon which rests a frame A1 upon which is supported in any suitable manner the owl or concave A2 provided with a liner Aaw Positioned within the main frame member A1 is the rigid bearing sleeve B which may be connected to the outer frame member as by the radial arms or connecting elements B1. The cylindrical inner aperture o`f the' sleeve B receives a liner or bearing B4.' Mounted for rotation with it is the eccentric sleeveiBf"A which may be driven through the gear B6 as for example by the pinion B7, on the shaft BB, and any suitable driving means.

C indicates al bearing cap positioned at the upper end of the sleeve B and serve as a closure also* for the gear box or space C1. It is provided with the concave conical upper surface C ada ted to receive the actual bearing member 3 with its true spherical bearing surface C4. The upper edge of the member C terminates in the overhanging flange or trip member C5 which is. undercut or recessed as at C and terminates in an outer peripheral generally vertical surface C7 and continues with a corresponding surface C8 about the outer edge of the member C3. C" generally indicates a circumferential oil well or sump which communicates, as by the passage C10, with the gear box C1. The member C is continued, exteriorly of said sump C9 by a portion C11 and a lateral outer extension C12 therefrom, the members C11 C12 conforming to the upper edge of the expanded end of the sleeve B, as shown.

D indicates a- Crusher shaft, penetrating the eccentric aperture D1 in the eccentric sleeve B5. Mountedat'the upper end of the shaft D is spherical surface D8 opposed to the corresponding concave spherical surface C4 of the member C3. This spherical surface terminates in the upwardly recessed channel D* with its vertical inner wall D5 and its inclined outer wall D8. Exterior of this. wall D6 is the depending circumferential ange D7 bounded by an inner generally vertical wall De and an outer wall D9 preferably parallel thereto. D10 indicates an extension of the cone or head outwardly beyond the Harige D7, the extension D10 terminating in a downwardly turned apron D11.

E, E1, generally indicate concentric dust guard or wiping members or flanges, which may have generally spherical surfaces E2 and Es respectively, these surfaces being concentric with the main spherical bearing surface C4.

G generally indicates a wiping and dust closure member which includes an outer wall G1 and an inner wall G?, the two walls being connected as by the, transverse member G3.

adapted to v The outer wall is shown as extcriorly vertical and the inner wall as nteriorly vertical, these opposed outer and inner vertical walls serving to guide the wiping member for vertical movement in the circumferential depression or guiding passage G". G5 is any suitable packing means oppose-d to the outer face of the wall G1. G.G is any suitable yielding means tending normally to thrust the member G upwardly in such fashion that the spherical wiping member G is opposed to the spherical surface E1 of the flange E. G3 is a corresponding generally spherical surfaced wiping member, associated with the wall G1, -and opposed to the spherical surface Ea of the flange E1. As shown in Figure 2 there is a slight but perceptible clearance between the opposed members E1 and It will be realized that a sufficient number of the springs or yieldingly upwardly thrusting members G6 may be provided for maintaining the entire periphery of the member G upwardly thrust against the flange E. G10 is a circumferential passage passing entirely about the bottom of the member or bearing cap generally indicated as C. It is 4in communication with the circumferential passage G4, as by a plurality of apertures H generally indicates an inlet passage adaptable for example to admit air under pressure. H1 diagrammatically indicates any suitable source of air pressure, such as a compression tank, the means for maintaining and supplying air under pressure being not shown herein in detail, since its details form no part of the present invention. H2 indicates any suitable manifold or distribution member, associated with the inner end of the passage H. It may7 be secured in any suitable manner to the sleeve B and may for example be welded at any desired position. As means for making an air inlet connection between the manifold H2 and the circumferential passage G10 and thus with the passage G1. I may provide a plurality of apertures H3, of the desired total cross-sectional area to admit the necessary flow or vtr-lume of air. It is preferable to employ a relatively large number of small passages rather than a small number of large passages, since weakening. of the sleeve B is thus avoided.

It will be realized that whereas I have described and shown a practical and operative device, nevertheless many changes might be made in tlie'size. shape, and disposition of partswithout departing from the spirit of my invention. l therefore wish my description and drawings to be taken as in a broad sense illustra/tive and diagrammatic rather than as limiting me to ymy specific showing.

The use and operation/ of my invention are as follows:

In gyratory crushers of the type herein shown and for example of the type in which an extended bearing surface 1s employed,

it is extremely important that the supporting bearing surface is Aprotected from the access of dust, grit or any foreign matter which might tend to burn out the bearings or reduce their wear or penetrate to the transmission. In other words the supporting bearing for the cone and the eccentric bearing for the shaft D, and all other bearings and wearing parts should be protected from dust, dirt and line particles which otherwise would materially reduce the life of the Crusher or even stop its operation. It happens that I have illustrated my invention in connection with a gyratory Crusher in which the head is supported by a ball and socket or spherical bearing connection. It will be understood that my invention is adaptable to luse with other types of supporting means.

In the particular form of my invention herein shown I provide the circumferential oil sump defined by or enclosed by the flange E, the member G1, and the adjacent parts of the cover member C. Into this chamber oil may seep from the opposed main bearing surfaces, once there it may drain down into the interior of the sleeve B. In order to prevent the access of dust or grit to this inner chamber, I provide the outer chamber defined by the exterior of the flange E, the interior of the flange E1, the exterior of the wall G2 and the interior of the wall G1. Into this space I admit air under pressure through the assage H, the apertures H3, the groove Gf" and the apertures G11. provide a slight clearance between the opposed members E1 and G8, whereby the air admitted to the above dened space may escape. By'maintaining a constant outflow of air through this restricted opening, I maintain a species of circumferential blast which not only prevents the admission of fine par-v ticles` but actually blows them away from the vicinity of the spherical bearing E3, the blast having a scouring action across the .surface E3. Thus, although the air about the crushing cone is inevitably lled with dust and fine particles, these particles cannot in any damaging quantity penetrate to the space within the flange E1 and the wall G1.

I claim: i

1. In a gyratory Crusher, a bearing member having an upwardly concave spherical bearing surface, a cone element supported upon said bearing surface, and means for gyrating it, a wiping member surrounding said bearing member and a wiping conne-etion between it and the conc, exterior to the connection between the cone and said spherical bearing surface, and means for admitting air under pressure into the space between said wiping connection i no said wiping members and the bearing engagement of -the cone with the spherical bearing surface.

2. In a gyratory crusher,a bearing member having an upwardly concave spherical bearing surface, a cone element supported upon said bearing surface, and means for gyrating it, a plurality of wiping members surrounding said bearing surface and spaced therefrom and wiping connections between said wiping members and the cone, exterior to the bearing connection between the cone and the spherical bea-ring surface, and means for admitting air under pressure into the space between the outermost. of said wiping connections and the wiping connection next therewithin.

3. The structure of claim 2 characterized by the employment of an oil receiving sump positioned between the first mentioned bearing member and the wiping connection next exterior thereto,'and means for draining said sump. l

4. In a gyratory Crusher a head, and means for gyrating it, a bowl opposed to the head, supporting means for said head and shielding means for said supporting means, eii'ective at all normal positions of the head, said shielding means including a wiping connection exterior to said supporting means, including opposed wiping elements, one associated with the'head and the other opposed thereto, and pneumatic means for preventing the passage of dust through said wiping connection.

5. In a gyratory crusher a head, and means for gyrating it, a bowl opposed to the head, supporting means for said head and shielding means for said supporting means,*eii'ectihve at all normal positions of the head, said shielding means including a wiping connection exterior to said supporting means, said wiping connection including opposed wipin elements, one associated with the headan the other opposed thereto, and pneumatic means for preventing t-he passage of dust through said wiping connection, including means for directing a current of air adjacent said wiping connection.

6. In a gyratory Crusher a head, and means for gyrating it, a bowl opposed to the head, supporting means for said head and shieldin means for said supporting means, effective at all normal positions of the head, said shielding means including a wiping connection exterior to said supporting means, said wiping connection including op osed wipin elements, one associated with te head an the other opposed thereto, and pneumatic means for preventing the passage of dust through said wiping connection, including means for passing a current of air through said wiping connection.

In a gyrato crusher which includes a head and means 1vtier gyrating it and a bowl opposed to said head, supportin means for the head and shielding means, e ective at all normal positions of the head, for preventing the access of dust to the supporting means, said shielding means including a member normally fixed and a. member, movable with the head, opposed to the fixed member, the size and shape of the members, in relation to the movement of the head, being adapted to maintain them constantly opposed to each other at all normal positions of the head, and means for maintaining a current of air outwardly between said opposed means.

8. The structure of claim 7 characterized in that the opposed faces of said members are spaced slightly apart to provide a restricted passage for the air.

9. In a gyratory Crusher which includes a head and means for gyrating it, and a bowl opposedto said head, a normally fixed supporting member for said head and a bearing connection between saidsupporting memberv and the lower portion of the head, and housing means surrounding the peripheries of the opposed bearing portions of head and supporting member and enclosing their zonel of bearing contact, and means for supplying air under pressure to the Space so dened.

Signed at Los Angeles, county of Los Angeles and State of California, this 30th day of November, 1929.

EDGAR B. SYMONS.

iis 

